Search Archives

An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20080708/4bbd533d/attachment.pl>

Dear List, I ran into some trouble by calculating differences. For me it is important that differences are either 0 or not. So I don't understand the outcome of this calculation 865.56-(782.86+0+63.85+18...

Dear List, I try to order the output of a table by the frequencies of the vector I am look at. The object I am looking at is a factor with a lot of levels that were named only once...

Hello everybody, I've a multi-level structured data.frame. I = Individual Level (factor) G = Group Level (factor) SW= Software (factor) I G SW 1 1 A 2 1 A 3 2 B Im looking for a frequncy-talbe of...

Dear list, I'm looking for a way to count the number of "|" within an object. The character "|" is used to separated ids. Assume a data (d) structure like Var NA NA NA NA NA 1 1|2 1|22...

Dear list, I'm looking for a way to select rows of a data.frame with changing number of columns (constraint) involved. Assume a data (d) structure like Var.1 Var.2 Var.3 9 2 1 2 9 5...

Dear List, I ran into some problems with weighted observations. I am looking for a frequency table listing the frequencies of the whole year as well as the frequencies of first and second half-year. The observation is of the...

Dear List, I ran into some problems with time-series-Data. Imagine a data-structure where observations (x) of test attendants (i) are made a four times (q) a year (y). The data is orderd the following way: I y...

Dear List, I ran into some trouble handling missing values. Assume 2 vectors (numeric) including NAs a <- c(rep(seq(1,4),4),NA,NA) b <- c(sample(1:2,14,replace=T),NA,NA,1,2) I want to...

Dear Everyone, I try to create a cvs-file with different results form the table function. Imagine a data-frame with two vectors a and b where b is of the class factor. I use the tapply function to count...

Dear list, I have some problems with time-series data and missing values of time-invariant informations like sex or the birth-date. Assume a data (d) structure like id birth sex year of observation 1 NA NA 2006 1...

Dear List, I have Multi-level Data i= Indivitual Level g= Group Level var1= First Variable of interest var2= Second Variable of interest and I want to count the frequency of "var1" and "var2" on the group level. I found...

Thank you a lot, I am almost done, but unfortunately I have to manipulate values like x 220a1 220ab1 220a12 to y 220 220 220 Eventhough it is easy to macht a 3-digit number [0-9]{3} I habe...

Hy Richie, thank you for the quick response. Unfortunately my problems hold on. Once again: 2 vectors (numeric) including NAs My intention: I want to replace the values of vector a that are smaller than 2 and larger than 3...